<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>...</title>
</head>
<body>
    <script>
        // 存储空间从何如来？
        // Proxy
        // window -> browser ->
        // cookie 文件，大小限制4KB
        // localStorage MB
        // DOM + BOM = JS 前端
        // .html text/html
        // .html text/html
        // DOM Document Object Model(img src span)
        // BOM Browser(window) Object Model
        window.localStorage.setItem('happiness','开车了');
        window.sessionStorage.setItem('dewu','毒')

    </script>
</body>
</html>